using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CharacterController2D : MonoBehaviour
{
    private Rigidbody2D rb;

    public LayerMask groundLayer;

    private float directionValue;
    private float movementSpeed;
    private float jumpForce;

    private KeyCode jumpKey;

    private bool isGrounded;
    private bool tickJump;


    private void Awake()
    {
        rb = gameObject.GetComponent<Rigidbody2D>();

        groundLayer = LayerMask.GetMask("Ground");

        movementSpeed = 500;
        jumpForce = 350;

        jumpKey = KeyCode.Space;

        isGrounded = true;
        tickJump = false;
    }


    private void Update()
    {
        directionValue = Input.GetAxisRaw("Horizontal");


        if(Input.GetKeyDown(jumpKey) && isGrounded == true)
        {
            tickJump = true;

            StartCoroutine(JumpEvent());
        }
    }


    private void FixedUpdate()
    {
        RaycastHit2D hit0 = Physics2D.Raycast(transform.position, Vector2.down, 0.55f, groundLayer);

        RaycastHit2D hit1 = Physics2D.Raycast(transform.position + new Vector3(-0.5f, 0, 0), Vector2.down, 0.55f, groundLayer);

        RaycastHit2D hit2 = Physics2D.Raycast(transform.position + new Vector3(0.5f, 0, 0), Vector2.down, 0.55f, groundLayer);


        isGrounded = hit0.collider != null || hit1.collider != null || hit2.collider != null;


        if (tickJump == true)
        {
            rb.AddForce(Vector2.up * jumpForce * Time.deltaTime, ForceMode2D.Impulse);

            tickJump = false;
        }


        rb.velocity = new Vector2(directionValue * movementSpeed * Time.deltaTime, rb.velocity.y);
    }


    private IEnumerator JumpEvent()
    {
        do
        {
            yield return null;
        }

        while (isGrounded != true);


        isGrounded = true;
    }
}